Controlling Crawl Space Moisture in Maryland

The Fix Categories, and What Each One Handles

• Vapor barrier, blocks ground evaporation at the source, the largest single moisture pathway in most Maryland crawl spaces
• Dehumidifier, controls the residual humidity a vapor barrier alone can't reach, particularly during Maryland's high dew point summer months
• Drainage, removes active liquid water intrusion, whether it's coming through the wall, the floor, or pooling from a grading problem outside
• Ventilation correction, addresses humid outdoor air infiltrating through open foundation vents, often by converting to a sealed, conditioned crawl space

Most Maryland crawl spaces need more than one of these working together. A vapor barrier without a dehumidifier still leaves residual summer humidity uncontrolled; drainage without a vapor barrier still lets ground evaporation raise indoor air moisture. OBW's inspection identifies which pathways are actually active in your crawl space and scopes only the components that address them.